Preparation method of emulsion type cumyl peroxyneodecanoate (CNP)

A new technology of cumyl decanoate and peroxide, applied in organic chemistry and other directions, can solve the problems of affecting the quality of high polymers, high toxicity, low activity, etc., and achieve uniform polymer molecular weight, product content and yield improvement. , Overcome the effect of low activity

Inactive Publication Date: 2012-05-09
LINZIZHENGHUA ACCESSORY INGREDIENT ZIBO
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  • Application Information

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Problems solved by technology

However, azo initiators have the disadvantages of low activity and high toxicity, which affect the quality of high polymers suc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment one: the preparation steps of emulsion type cumyl peroxyneodecanoate (CNP) are as follows:

[0012] (1) In a 500ml flask, add 22.5 grams of sodium hydroxide with a mass content of 90%, 40 grams of water, stir and cool to 5°C, and make a sodium hydroxide alkaline solution with a concentration of about 32%;

[0013] (2) 38 grams of cumene hydroperoxide with a purity of 87.5% were added dropwise to the solution prepared in step (1), reacted for 30 minutes, and the temperature was controlled at 20° C.;

[0014] (3) Slowly add 53 grams of 80% octadecanoyl chloride solution in the flask after stirring evenly, the reaction temperature is controlled at 25°C to 30°C, and the addition is completed within 1.5 hours to 2 hours. After adding the octadecanoyl chloride solution Stir the reaction for 50 minutes;

[0015] (4) Stop stirring after the reaction finishes, leave standstill, the reaction mother liquor is separated, and the reaction product is washed with water unt...

Embodiment 2

[0019] Embodiment two: the preparation steps of emulsion type cumyl peroxyneodecanoate (CNP) are as follows:

[0020] (1) In a 500ml flask, add 22.5 grams of sodium hydroxide with a mass content of 90%, 40 grams of water, stir and cool to 5°C, and make a sodium hydroxide alkaline solution with a concentration of about 32%;

[0021] (2) 38 grams of cumene hydroperoxide with a purity of 87.5% were added dropwise to the solution prepared in step (1), reacted for 30 minutes, and the temperature was controlled at 30° C.;

[0022] (3) Slowly add 54 grams of 80% octadecanoyl chloride solution in the flask after stirring evenly, the reaction temperature is controlled at 25°C to 30°C, and the addition is completed within 1.5 hours to 2 hours. Stir the reaction for 60 minutes;

[0023] (4) stop stirring after reaction finishes, leave standstill, the reaction mother liquor is separated, and the reaction product is washed with water until the pH value is 5-7, and the obtained mass conten...

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Abstract

The invention relates to a preparation method of an initiator for polymer synthesis, and in particular relates to a preparation method of emulsion type cumyl peroxyneodecanoate (CNP). The invention adopts a technical scheme that: the preparation method comprises the following steps: mixing and stirring octyl-decanoyl chloride, an alkaline solution and cumene hydroperoxide at a temperature of between 10 and 40 DEG C to react; and adding proper an antifreezing agent, an emulsifier, a dispersing agent and deionized water, and mixing to prepare a homogenous solution, namely emulsion type cumyl peroxyneodecanoate (CNP). The product prepared by using the method provided by the invention has greatly improved content and yield, and is convenient for storage and transportation. According to the method, the process is simplified, complicated requirement to reaction equipment is overcome, the reaction is carried out in a milder and safer condition, and the product yield is over 95 percent.

Description

technical field [0001] The invention relates to a preparation method of an initiator for polymer synthesis, in particular to a preparation method of emulsion type cumyl peroxyneodecanoate (CNP). Background technique [0002] With the rapid development of the domestic polymer synthesis industry, the quality and demand of initiators for polymer synthesis have increased rapidly. As we all know, azo initiators, such as azobisisobutyronitrile and azobisisoheptanonitrile (ABVN), have long been used as initiators for the synthesis of high polymers such as polyvinyl chloride. However, azo initiators have disadvantages such as low activity and high toxicity, which affect the quality of high polymer products such as polyvinyl chloride, and the toxic substances in the production process are seriously poisonous to the human body. [0003] Emulsion-type cumyl peroxyneodecanoate (CNP), as a high-efficiency initiator for polymer synthesis, compared with ordinary azo initiators, in the pro...

Claims

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Application Information

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IPC IPC(8): C08F4/38C08F4/34C08F14/06C07C409/38
Inventor 侯永正翟少华倪啟化许淑女
Owner LINZIZHENGHUA ACCESSORY INGREDIENT ZIBO
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